What’s the deal with all those adresses on ledger?

Hey guys,
I’m a bit confused about all the wallet-adresses showing up when I connect my ledger to iconex. What’s the idea? Can I just pick one and claim it as mine? Why are there so many adresses showing up? In my case i can scroll all the way to + 15 tabs, why is that?
Hope you guys can help me and clarify. At the moment i’m a bit cautious to transfer my icx!
Nick

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